Speaker system



FIG. 1 is a front elevation view of the present design.

FIG. 2 is a left side elevation view of the present design;

FIG. 3 is a right side elevation view of the present design;

FIG. 4 is a bottom view of the present design;

FIG. 5 is a top view of the present design; and,

FIG. 6 is a rear elevation view of the present design. 

The ornamental design for a speaker system, as shown and described. 